lorryload's picture

Unidentified bird

Observed: 12th April 2010 By: lorryload
RIMG0530
RIMG0529
DSC00394
DSC00395
DSC00400
DSC00412
DSC00414
DSC00414 7
DSC00414 7 8
DSC00414 7 8 9
DSC00414 7 8 9 10
Description:
Identifications
Species interactions

No interactions present.

Comments

Kluut's picture

Robin

I don't bet, but if I did, I'd bet that it is a male robin.

anonymous spotter's picture

Robin?

The general size and shape is right for a robin.
Reading Kluut's comment - I should have thought of their tendency to fight: it's very likely the cause of the de-feathering.

Kluut's picture

Possibly not sick and

Possibly not sick - it seems "bright-eyed" and to be eating, and definitely not moulting - no bird moults whole areas of feathers at once, apart from flight feathers in some species, and not at this time of year. However, they fight like cat and dog at this time of year, which is a more likely cause and hence my suggestion that it is a male.

bobthebirder's picture

bald robin

I've seen tatty robins before but it is incredibly unusual for one to lose ALL of the feathers from one area. The fighting robins theory is a good one, but the daft bird must have kept very still to allow its rival to make such a thorough job of it. I wonder if this is more likely to be the result of the bird getting its head stuck in something, garden netting perhaps?

Bob Ford

RoyW's picture

I would also bet it's a Robin

Although the orangy-red breast is entirely missing, I have little doubt that this is a Robin.
As for the reason for it's baldness, there have been a number of suggestions why bald birds like this sometimes occur including malnutrition, disease, mites and abnormal moult (+ Kluuts reasonable suggestion that this one may be the result of a lost fight). As far as I know, no conclusive evidence has been found for any of these suggestions yet though!

Since Robins have been shown to attack stuffed models, and it is the red breast that apaprently triggers the attacks, perhaps a rival could have 'laid into' this one after it had somehow been temporarily stunned (eg after flying into a window), and continued to attack until all the red feathers were gone!? I guess that we'll never know.

kieren's picture

Same thing... but a blackbird

Nick Baker mentioned this picture on twitter a couple of weeks ago:-

http://tweetphoto.com/16561874

It's a blackbird with a bald head; similar to the bird here.

Nick said that this individual was in its second year of breeding. Obviously Nick has seen the individual before and the feather loss was permanent in that case.

Kieren Pitts

Amateur Entomologists' Society
Webmaster and Youth Secretary
Web: http://www.amentsoc.org
Twitter: http://twitter.com/amentsoc

Goldfinch's picture

robin

I think it could be an unnaturally large nestling that has not fully developed it's feathers.

Kluut's picture

Nestlings inhabit nests - I

Nestlings inhabit nests - I think you mean fledgling :-).

Fledgling robins are spotted, with no red feathers (to avoid agression from their parents), and will not be around for a few weeks yet, and are fully feathered when they do fledge.